Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van canh cha snippets" » "van anh cha snippets", "van hanh cha snippets", "van manh cha snippets", "van canh chau snippets", "van canh cua snippets", "van thanh cha snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("van canh cha snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van canh cha snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van canh cha snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van canh cha snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.